"Passenger" movie stars Jennifer Lawrence and Chris Pratt's press tour to promote their sci-fi love story movie was scheduled in the United Kingdom, but the tour turned out to be a child's play, with just brutal insults added.

Last Monday, the "Passenger" costars were touring the country when they stopped by BBC One. The two dissed each other in a segment called "Playground Insults," a game in BBC Radio One "Steve Mills Show." The goal is one should not laugh or should be able to counter what was thrown to them.

As people are aware, these "Passenger" stars are doing well with each other on their press tour. Following the consistent headline news that highlight their hilarious antics like Chris Pratt's prank on Jennifer cropping her out of his Instagram photos. But the chemistry they are showing to people doesn't mean they don't have boiling insults packed with overall reactions to throw to each other.

Meanwhile, during the game, both of them didn't hold back and didn't show any limits to their gibes. Jennifer tried her hardest to maintain a straight face because of Pratt's punch lines that made her crack already like "How does it feel being in the stupidest Marvel movie?" pertaining to Jennifer's role in "X:Men The Last Stand", Mystique. He also joked about Jennifer having "so much fake hair." And also that Jennifer acts like Adele sings and that he hates Adele.

Jennifer then ragged Chris of his Oscar-less career and that Pratt is so dumb that his 3-year-old son had to teach him everything he knows. Pratt punched the Oscar jab back to Jennifer by saying, "You were given an Oscar for best actress, you would also get one for being the worst."

Chris Pratt delivered the killer insult when Jennifer joked about her taking two Pepto-Bismol tablets before their intimate sex scene, while the response of Chris'... people would just have to watch the video below to know Pratt's final knockout punch on Lawrence. US Magazine hinted that it was about their sex scene and Jennifer having a d**k.

"That was the darkest one yet, by far," show host Mills said, concluding the game and declaring Chris Pratt the winner.

Watch the full showdown below for more of their insults.